Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

A1E9F1

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N222RL · DE HAVILLAND DHC-2 Beaver · operated by BROWN MICHAEL SHAWN

Hex
A1E9F1
Octal
50364761
Decimal
10,611,185
Country
US
Tail
N222RL
Type
DHC2
No current signal · last broadcast Jul 26, 22:15 UTC
Flights observed
175
Distinct callsigns
1
Country
US
Last broadcast
Jul 26, 22:15 UTC

Last known position

Most recent position reported by Mode-S A1E9F1.

Country allocation

The ICAO 24-bit address A1E9F1 falls within the block assigned to United States (US) by ICAO Annex 10, Volume III. Every aircraft registered in United States receives a permanent address from this block at the time of registration; the address stays with the airframe even if the aircraft is re-registered to a different operator within the country.

Callsign history 1 distinct

Callsign Airline Flights Last seen
N222RL - 175 2026-07-26

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 N222RL - Jul 26, 19:55 UTCJul 26, 22:15 UTC2h 20m
2026-07-26 N222RL - Jul 26, 18:00 UTCJul 26, 19:15 UTC1h 15m
2026-07-26 N222RL - Jul 26, 16:35 UTCJul 26, 17:30 UTC55m
2026-07-26 N222RL - Jul 26, 14:50 UTCJul 26, 15:50 UTC1h 0m
2026-07-26 N222RL - Jul 26, 01:00 UTCJul 26, 05:10 UTC4h 10m
2026-07-25 N222RL - Jul 25, 19:55 UTCJul 26, 00:15 UTC4h 20m
2026-07-25 N222RL - Jul 25, 18:55 UTCJul 25, 19:20 UTC25m
2026-07-25 N222RL - Jul 25, 18:00 UTCJul 25, 18:25 UTC25m
2026-07-25 N222RL - Jul 25, 15:00 UTCJul 25, 17:20 UTC2h 20m
2026-07-21 N222RL - Jul 21, 01:55 UTCJul 21, 04:30 UTC2h 35m
2026-07-20 N222RL - Jul 20, 21:15 UTCJul 21, 01:05 UTC3h 49m
2026-07-20 N222RL - Jul 20, 15:10 UTCJul 20, 19:40 UTC4h 30m
2026-07-19 N222RL - Jul 19, 20:00 UTCJul 20, 00:50 UTC4h 50m
2026-07-19 N222RL - Jul 19, 18:00 UTCJul 19, 19:00 UTC1h 0m
2026-07-19 N222RL - Jul 19, 15:00 UTCJul 19, 17:30 UTC2h 30m
2026-07-19 N222RL - Jul 19, 01:25 UTCJul 19, 04:45 UTC3h 20m
2026-07-18 N222RL - Jul 18, 21:30 UTCJul 18, 23:10 UTC1h 40m
2026-07-18 N222RL - Jul 18, 20:00 UTCJul 18, 21:00 UTC1h 0m
2026-07-18 N222RL - Jul 18, 16:30 UTCJul 18, 17:25 UTC55m
2026-07-18 N222RL - Jul 18, 14:50 UTCJul 18, 15:45 UTC55m
2026-07-18 N222RL - Jul 18, 01:00 UTCJul 18, 03:40 UTC2h 41m
2026-07-17 N222RL - Jul 17, 23:50 UTCJul 18, 00:15 UTC25m
2026-07-17 N222RL - Jul 17, 20:00 UTCJul 17, 23:20 UTC3h 20m
2026-07-17 N222RL - Jul 17, 17:55 UTCJul 17, 19:09 UTC1h 15m
2026-07-17 N222RL - Jul 17, 14:55 UTCJul 17, 17:20 UTC2h 25m
2026-07-17 N222RL - Jul 17, 03:14 UTCJul 17, 03:34 UTC20m
2026-07-17 N222RL - Jul 17, 01:20 UTCJul 17, 02:15 UTC55m
2026-07-16 N222RL - Jul 16, 20:00 UTCJul 17, 00:35 UTC4h 35m
2026-07-16 N222RL - Jul 16, 18:00 UTCJul 16, 18:55 UTC55m
2026-07-16 N222RL - Jul 16, 16:25 UTCJul 16, 17:20 UTC55m
2026-07-16 N222RL - Jul 16, 14:55 UTCJul 16, 15:49 UTC55m
2026-07-16 N222RL - Jul 16, 01:00 UTCJul 16, 05:05 UTC4h 5m
2026-07-15 N222RL - Jul 15, 20:00 UTCJul 16, 00:10 UTC4h 10m
2026-07-15 N222RL - Jul 15, 17:55 UTCJul 15, 18:50 UTC55m
2026-07-15 N222RL - Jul 15, 15:00 UTCJul 15, 17:15 UTC2h 15m
2026-07-15 N222RL - Jul 15, 02:10 UTCJul 15, 03:20 UTC1h 10m
2026-07-15 N222RL - Jul 15, 00:45 UTCJul 15, 01:40 UTC55m
2026-07-14 N222RL - Jul 14, 23:50 UTCJul 15, 00:15 UTC25m
2026-07-14 N222RL - Jul 14, 20:05 UTCJul 14, 23:20 UTC3h 14m
2026-07-14 N222RL - Jul 14, 18:05 UTCJul 14, 19:00 UTC55m
2026-07-14 N222RL - Jul 14, 15:10 UTCJul 14, 17:25 UTC2h 15m
2026-07-14 N222RL - Jul 14, 01:00 UTCJul 14, 03:30 UTC2h 30m
2026-07-13 N222RL - Jul 13, 23:45 UTCJul 14, 00:15 UTC30m
2026-07-13 N222RL - Jul 13, 19:55 UTCJul 13, 23:15 UTC3h 20m
2026-07-13 N222RL - Jul 13, 18:00 UTCJul 13, 18:55 UTC55m
2026-07-13 N222RL - Jul 13, 16:25 UTCJul 13, 17:20 UTC55m
2026-07-13 N222RL - Jul 13, 15:00 UTCJul 13, 15:50 UTC50m
2026-07-11 N222RL - Jul 11, 21:55 UTCJul 11, 22:20 UTC25m
2026-07-11 N222RL - Jul 11, 18:00 UTCJul 11, 18:25 UTC25m
2026-07-11 N222RL - Jul 11, 16:45 UTCJul 11, 17:05 UTC20m

About Mode-S

A Mode-S transponder code (also called an "ICAO 24-bit address" or "hex code") is a 6-character hexadecimal identifier permanently assigned to an aircraft when it's first registered. Unlike callsigns (which change with each flight) or registrations (which can change if an aircraft is sold internationally), the Mode-S address stays with the airframe for the life of the aircraft in that country.

Every ADS-B transmission from an aircraft includes its Mode-S address, making it the most reliable way to identify a specific airframe. Flight-tracking services like Apparatus use the Mode-S address as the primary key for tying position broadcasts, callsigns, and ownership records together.

Prefer a tail-number view? See the N222RL page for operator, model, and routing details .

Mode-S A1E9F1 frequently asked

What is Mode-S code A1E9F1?
A1E9F1 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N222RL.
Where is Mode-S A1E9F1 registered?
Mode-S code A1E9F1 is allocated to United States (US). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is A1E9F1 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 22:15 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A1E9F1, octal 50364761, decimal 10,611,185.
What flights does A1E9F1 operate?
Mode-S A1E9F1 has broadcast 1 distinct callsign, including N222RL.